104421281 has 2 divisors, whose sum is σ = 104421282. Its totient is φ = 104421280.

The previous prime is 104421217. The next prime is 104421287. The reversal of 104421281 is 182124401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97614400 + 6806881 = 9880^2 + 2609^2 .

It is an emirp because it is prime and its reverse (182124401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104421281 - 2⁶ = 104421217 is a prime.

It is a super-2 number, since 2×104421281² = 21807607851361922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (104421287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52210640 + 52210641.

It is an arithmetic number, because the mean of its divisors is an integer number (52210641).

Almost surely, 2^104421281 is an apocalyptic number.

It is an amenable number.

104421281 is a deficient number, since it is larger than the sum of its proper divisors (1).

104421281 is an equidigital number, since it uses as much as digits as its factorization.

104421281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 104421281 is about 10218.6731526162. The cubic root of 104421281 is about 470.9010645315.

Adding to 104421281 its reverse (182124401), we get a palindrome (286545682).

The spelling of 104421281 in words is "one hundred four million, four hundred twenty-one thousand, two hundred eighty-one".